The stability and healthy development of natural gas market is closely related to the national energy security strategy,the enterprises’ goal of huge investment of recycling,and utilization of the natural gas users. Researching the status quo of the natural gas market in depth,analyzing the market development bottleneck,studying quantitatively the enterprises’ management efficiency and influencing factors,then actively exploring the correct development of natural gas market in China are of great significance. According to the gas industry enterprises’ unbalanced panel data from 2000 to 2011,this paper used three-stage DEA model to analyze the companies’ technical efficiency (TE),pure technical efficiency (PTE) and scale efficiency (SE). Study found that more than 50% of the sample companies failed to meet the effective frontier,and the cause of low technical efficiency (TE) was mainly due to the company size which was not in the best state,that was scale efficiency (SE) was on the low side. The whole pure technical efficiency (PTE) was high,which showed that the operation and management in the gas companies were relatively good,without major decision-making errors,and this efficiency was less affected by the external environment factors. The volatility of scale efficiency (SE) was the most obvious,and the wave path were consistent with technical efficiency (TE)’s.